[PYTHON/COMMON] 특정일이 속하는 월(Month)의 마지막 날짜 구하기

■ 특정일이 속하는 월(Month)의 마지막 날짜를 구하는 방법을 보여준다.

▶ 예제 코드 (PY)


import datetime

def IsLeapYear(year):
    if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):
        return True
    else:
        return False

MonthDayCountList = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

def GetMonthLastDate(sourceDate):
    dayCount = MonthDayCountList[sourceDate.month - 1]
    if sourceDate.month == 2:
        if IsLeapYear(sourceDate.year):
            dayCount += 1
    targetDate = datetime.datetime(sourceDate.year, sourceDate.month, dayCount)
    return targetDate

if __name__ == "__main__":
    print(GetMonthLastDate(datetime.datetime(2016, 2 , 16))) # 2016-02-29 00:00:00
    print(GetMonthLastDate(datetime.datetime(2019, 11, 16))) # 2019-11-30 00:00:00

import datetime

def IsLeapYear(year):

if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):

return True

else:

return False

MonthDayCountList = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

def GetMonthLastDate(sourceDate):

dayCount = MonthDayCountList[sourceDate.month - 1]

if sourceDate.month == 2:

if IsLeapYear(sourceDate.year):

dayCount += 1

targetDate = datetime.datetime(sourceDate.year, sourceDate.month, dayCount)

return targetDate

if __name__ == "__main__":

print(GetMonthLastDate(datetime.datetime(2016, 2 , 16))) # 2016-02-29 00:00:00

print(GetMonthLastDate(datetime.datetime(2019, 11, 16))) # 2019-11-30 00:00:00